Created attachment 31291 [details] problem jmx This is a fairly impossible problem but I thought I'd raise it in case it supports something you've already seem. In the attached plan, if I run it without a timer it is successful for each request. However, if I enable the timer the the first upload request works but the second fails, then the third works, and the forth fails, etc... The only difference is enabling and disabling the timer. Unfortunately, I can't actually give you a working jmx - the attached will always fail but hopefully it is still useful. Failure is: org.apache.http.NoHttpResponseException: The target server failed to respond Success: 204 - blank response The type of timer makes no difference. The value in the timer DOES make a difference. 100ms and + = problem, 30ms = no problem. The request I am making to S3 is valid, were it not I would get an error response. In this case I get NoHTTPResponse.
*** This bug has been marked as a duplicate of bug 56119 ***
This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/3315